Description
The ABB PM864AK01 3BSE022366R1 is a high-reliability central processing unit (CPU) module from the AC 800M family—ABB’s flagship programmable logic controller (PLC) platform designed for demanding industrial automation and electrical power applications. Serving as the computational heart of control systems in sectors like energy, oil & gas, water, and heavy industry, this controller delivers deterministic real-time performance with robust communication, extensive I/O scalability, and native support for international standards including IEC 61131-3, IEC 61850, and SIL 3 safety functions (when used in redundant configuration).
The PM864AK01 features 64 MB of application memory, enabling complex control strategies, data logging, and integration with higher-level systems such as ABB’s 800xA or third-party SCADA platforms. It includes two integrated 10/100 Mbps Ethernet ports for engineering access, peer-to-peer communication, and protocol-based data exchange (e.g., Modbus TCP, PROFINET IO). Designed for continuous 24/7 operation, the module supports hot-swap backup in redundant (PM864A/PM864A) configurations—ensuring zero downtime during maintenance or failure events. Its ruggedized design meets stringent environmental requirements (IEC 60068, IEC 61000), making it suitable for harsh plant floors and outdoor substations alike.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | PM864AK01 3BSE022366R1 |
| Manufacturer | ABB AB |
| Product Type | AC 800M CPU Controller (Non-Redundant Base Unit) |
| Processor | 32-bit RISC, optimized for real-time control |
| Application Memory | 64 MB RAM |
| Program Scan Time | As low as 1 ms (typical for 1K Boolean instructions) |
| Integrated Communication | 2 × 10/100 Mbps Ethernet (RJ45), RS-232 service port |
| Supported Protocols | Modbus TCP, PROFINET IO (Controller), IEC 61850 (via TGE modules), AC 800M P2P, FTP, HTTP |
| Redundancy Support | Yes (with second PM864AK01 in redundant pair) |
| Operating Temperature | -25°C to +60°C |
| Mounting | DIN rail or rack-mounted in AC 800M chassis |
| Power Consumption | ~10 W (max) |
| Certifications | CE, UL 61010-2-201, IEC 61508 (SIL 3 in redundant mode), IEC 61850-3 |
Main Features and Advantages
Real-time deterministic control for critical processes
The ABB PM864AK01 3BSE022366R1 executes logic with microsecond-level precision, supporting fast PID loops, sequence control, and interlocking functions essential in turbine protection, boiler management, or emergency shutdown systems. Its deterministic scan ensures consistent response times—vital for maintaining process stability and meeting safety integrity targets.
Seamless integration into modern digital architectures
With native Ethernet and broad protocol support, the PM864AK01 acts as a unified control hub. When paired with optional modules like the 1TGE120021R0110 (Gigabit Ethernet) or CI854A (legacy fieldbus gateway), it bridges legacy devices and next-gen networks—including full IEC 61850 GOOSE/SV for digital substations. The built-in web server allows remote diagnostics via standard browsers, reducing site visits.
High availability through redundancy and diagnostics
In redundant (duplex) mode, two PM864AK01 units synchronize state continuously, with automatic failover in<10>
Application Field
The ABB PM864AK01 3BSE022366R1 is widely deployed in mission-critical infrastructure where reliability, speed, and compliance are non-negotiable:
Power Generation & Transmission: Controls turbine governors, generator excitation, breaker interlocks, and substation automation using IEC 61850. Often used in hydro, thermal, and combined-cycle plants.
Oil & Gas: Manages compressor station sequencing, pipeline leak detection, and ESD (Emergency Shutdown) logic—frequently certified for SIL 2/3 applications.
Water & Wastewater: Coordinates pump stations, chemical dosing, and reservoir level control across distributed SCADA networks.
Mining & Metals: Drives conveyor logic, crusher interlocks, and furnace control with millisecond response to prevent equipment damage.
Related Products
ABB PM865AK01 3BSE022367R1: Enhanced version with more memory and faster processor
ABB CI854A 3BSE020360R1: Communication interface for PROFIBUS DP, MODBUS RTU, and legacy networks
ABB 1TGE120021R0110: Gigabit Ethernet module for IEC 61850 and high-speed networking
ABB TB840A 3BSE022460R1: Termination board for redundant CPU synchronization
ABB 800xA System 800: DCS platform that fully integrates AC 800M controllers for unified operations
ABB Control Builder M: Engineering software for programming, simulation, and commissioning
ABB PM864A Redundant Pair Kit: Pre-configured dual-CPU setup for high-availability applications
Installation and Maintenance
Installation Guidelines:
Mount the PM864AK01 3BSE022366R1 in a ventilated AC 800M rack with adequate clearance (≥50 mm on sides). Connect to a stable 24 VDC power supply via the backplane. Use shielded Ethernet cables grounded at one end only. Before powering, verify firmware compatibility with I/O and communication modules. Load application code via Control Builder M over Ethernet or USB-to-RS232 adapter.
Maintenance Best Practices:
Although solid-state with no moving parts, monitor CPU load (<70>PM864AK01 auto-syncs application data from the backup unit in redundant mode; in standalone mode, reload from engineering station.



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